1 /* 2 * fs/f2fs/f2fs.h 3 * 4 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5 * http://www.samsung.com/ 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #ifndef _LINUX_F2FS_H 12 #define _LINUX_F2FS_H 13 14 #include <linux/types.h> 15 #include <linux/page-flags.h> 16 #include <linux/buffer_head.h> 17 #include <linux/slab.h> 18 #include <linux/crc32.h> 19 #include <linux/magic.h> 20 #include <linux/kobject.h> 21 #include <linux/sched.h> 22 23 #ifdef CONFIG_F2FS_CHECK_FS 24 #define f2fs_bug_on(condition) BUG_ON(condition) 25 #define f2fs_down_write(x, y) down_write_nest_lock(x, y) 26 #else 27 #define f2fs_bug_on(condition) 28 #define f2fs_down_write(x, y) down_write(x) 29 #endif 30 31 /* 32 * For mount options 33 */ 34 #define F2FS_MOUNT_BG_GC 0x00000001 35 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 36 #define F2FS_MOUNT_DISCARD 0x00000004 37 #define F2FS_MOUNT_NOHEAP 0x00000008 38 #define F2FS_MOUNT_XATTR_USER 0x00000010 39 #define F2FS_MOUNT_POSIX_ACL 0x00000020 40 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 41 #define F2FS_MOUNT_INLINE_XATTR 0x00000080 42 #define F2FS_MOUNT_INLINE_DATA 0x00000100 43 #define F2FS_MOUNT_FLUSH_MERGE 0x00000200 44 45 #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) 46 #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) 47 #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) 48 49 #define ver_after(a, b) (typecheck(unsigned long long, a) && \ 50 typecheck(unsigned long long, b) && \ 51 ((long long)((a) - (b)) > 0)) 52 53 typedef u32 block_t; /* 54 * should not change u32, since it is the on-disk block 55 * address format, __le32. 56 */ 57 typedef u32 nid_t; 58 59 struct f2fs_mount_info { 60 unsigned int opt; 61 }; 62 63 #define CRCPOLY_LE 0xedb88320 64 65 static inline __u32 f2fs_crc32(void *buf, size_t len) 66 { 67 unsigned char *p = (unsigned char *)buf; 68 __u32 crc = F2FS_SUPER_MAGIC; 69 int i; 70 71 while (len--) { 72 crc ^= *p++; 73 for (i = 0; i < 8; i++) 74 crc = (crc >> 1) ^ ((crc & 1) ? CRCPOLY_LE : 0); 75 } 76 return crc; 77 } 78 79 static inline bool f2fs_crc_valid(__u32 blk_crc, void *buf, size_t buf_size) 80 { 81 return f2fs_crc32(buf, buf_size) == blk_crc; 82 } 83 84 /* 85 * For checkpoint manager 86 */ 87 enum { 88 NAT_BITMAP, 89 SIT_BITMAP 90 }; 91 92 /* 93 * For CP/NAT/SIT/SSA readahead 94 */ 95 enum { 96 META_CP, 97 META_NAT, 98 META_SIT, 99 META_SSA 100 }; 101 102 /* for the list of orphan inodes */ 103 struct orphan_inode_entry { 104 struct list_head list; /* list head */ 105 nid_t ino; /* inode number */ 106 }; 107 108 /* for the list of directory inodes */ 109 struct dir_inode_entry { 110 struct list_head list; /* list head */ 111 struct inode *inode; /* vfs inode pointer */ 112 }; 113 114 /* for the list of blockaddresses to be discarded */ 115 struct discard_entry { 116 struct list_head list; /* list head */ 117 block_t blkaddr; /* block address to be discarded */ 118 int len; /* # of consecutive blocks of the discard */ 119 }; 120 121 /* for the list of fsync inodes, used only during recovery */ 122 struct fsync_inode_entry { 123 struct list_head list; /* list head */ 124 struct inode *inode; /* vfs inode pointer */ 125 block_t blkaddr; /* block address locating the last inode */ 126 }; 127 128 #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) 129 #define sits_in_cursum(sum) (le16_to_cpu(sum->n_sits)) 130 131 #define nat_in_journal(sum, i) (sum->nat_j.entries[i].ne) 132 #define nid_in_journal(sum, i) (sum->nat_j.entries[i].nid) 133 #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) 134 #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) 135 136 static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) 137 { 138 int before = nats_in_cursum(rs); 139 rs->n_nats = cpu_to_le16(before + i); 140 return before; 141 } 142 143 static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) 144 { 145 int before = sits_in_cursum(rs); 146 rs->n_sits = cpu_to_le16(before + i); 147 return before; 148 } 149 150 /* 151 * ioctl commands 152 */ 153 #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS 154 #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS 155 156 #if defined(__KERNEL__) && defined(CONFIG_COMPAT) 157 /* 158 * ioctl commands in 32 bit emulation 159 */ 160 #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS 161 #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS 162 #endif 163 164 /* 165 * For INODE and NODE manager 166 */ 167 /* 168 * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 169 * as its node offset to distinguish from index node blocks. 170 * But some bits are used to mark the node block. 171 */ 172 #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ 173 >> OFFSET_BIT_SHIFT) 174 enum { 175 ALLOC_NODE, /* allocate a new node page if needed */ 176 LOOKUP_NODE, /* look up a node without readahead */ 177 LOOKUP_NODE_RA, /* 178 * look up a node with readahead called 179 * by get_data_block. 180 */ 181 }; 182 183 #define F2FS_LINK_MAX 32000 /* maximum link count per file */ 184 185 /* for in-memory extent cache entry */ 186 #define F2FS_MIN_EXTENT_LEN 16 /* minimum extent length */ 187 188 struct extent_info { 189 rwlock_t ext_lock; /* rwlock for consistency */ 190 unsigned int fofs; /* start offset in a file */ 191 u32 blk_addr; /* start block address of the extent */ 192 unsigned int len; /* length of the extent */ 193 }; 194 195 /* 196 * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. 197 */ 198 #define FADVISE_COLD_BIT 0x01 199 #define FADVISE_LOST_PINO_BIT 0x02 200 201 #define DEF_DIR_LEVEL 0 202 203 struct f2fs_inode_info { 204 struct inode vfs_inode; /* serve a vfs inode */ 205 unsigned long i_flags; /* keep an inode flags for ioctl */ 206 unsigned char i_advise; /* use to give file attribute hints */ 207 unsigned char i_dir_level; /* use for dentry level for large dir */ 208 unsigned int i_current_depth; /* use only in directory structure */ 209 unsigned int i_pino; /* parent inode number */ 210 umode_t i_acl_mode; /* keep file acl mode temporarily */ 211 212 /* Use below internally in f2fs*/ 213 unsigned long flags; /* use to pass per-file flags */ 214 struct rw_semaphore i_sem; /* protect fi info */ 215 atomic_t dirty_dents; /* # of dirty dentry pages */ 216 f2fs_hash_t chash; /* hash value of given file name */ 217 unsigned int clevel; /* maximum level of given file name */ 218 nid_t i_xattr_nid; /* node id that contains xattrs */ 219 unsigned long long xattr_ver; /* cp version of xattr modification */ 220 struct extent_info ext; /* in-memory extent cache entry */ 221 }; 222 223 static inline void get_extent_info(struct extent_info *ext, 224 struct f2fs_extent i_ext) 225 { 226 write_lock(&ext->ext_lock); 227 ext->fofs = le32_to_cpu(i_ext.fofs); 228 ext->blk_addr = le32_to_cpu(i_ext.blk_addr); 229 ext->len = le32_to_cpu(i_ext.len); 230 write_unlock(&ext->ext_lock); 231 } 232 233 static inline void set_raw_extent(struct extent_info *ext, 234 struct f2fs_extent *i_ext) 235 { 236 read_lock(&ext->ext_lock); 237 i_ext->fofs = cpu_to_le32(ext->fofs); 238 i_ext->blk_addr = cpu_to_le32(ext->blk_addr); 239 i_ext->len = cpu_to_le32(ext->len); 240 read_unlock(&ext->ext_lock); 241 } 242 243 struct f2fs_nm_info { 244 block_t nat_blkaddr; /* base disk address of NAT */ 245 nid_t max_nid; /* maximum possible node ids */ 246 nid_t next_scan_nid; /* the next nid to be scanned */ 247 unsigned int ram_thresh; /* control the memory footprint */ 248 249 /* NAT cache management */ 250 struct radix_tree_root nat_root;/* root of the nat entry cache */ 251 rwlock_t nat_tree_lock; /* protect nat_tree_lock */ 252 unsigned int nat_cnt; /* the # of cached nat entries */ 253 struct list_head nat_entries; /* cached nat entry list (clean) */ 254 struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ 255 256 /* free node ids management */ 257 struct radix_tree_root free_nid_root;/* root of the free_nid cache */ 258 struct list_head free_nid_list; /* a list for free nids */ 259 spinlock_t free_nid_list_lock; /* protect free nid list */ 260 unsigned int fcnt; /* the number of free node id */ 261 struct mutex build_lock; /* lock for build free nids */ 262 263 /* for checkpoint */ 264 char *nat_bitmap; /* NAT bitmap pointer */ 265 int bitmap_size; /* bitmap size */ 266 }; 267 268 /* 269 * this structure is used as one of function parameters. 270 * all the information are dedicated to a given direct node block determined 271 * by the data offset in a file. 272 */ 273 struct dnode_of_data { 274 struct inode *inode; /* vfs inode pointer */ 275 struct page *inode_page; /* its inode page, NULL is possible */ 276 struct page *node_page; /* cached direct node page */ 277 nid_t nid; /* node id of the direct node block */ 278 unsigned int ofs_in_node; /* data offset in the node page */ 279 bool inode_page_locked; /* inode page is locked or not */ 280 block_t data_blkaddr; /* block address of the node block */ 281 }; 282 283 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, 284 struct page *ipage, struct page *npage, nid_t nid) 285 { 286 memset(dn, 0, sizeof(*dn)); 287 dn->inode = inode; 288 dn->inode_page = ipage; 289 dn->node_page = npage; 290 dn->nid = nid; 291 } 292 293 /* 294 * For SIT manager 295 * 296 * By default, there are 6 active log areas across the whole main area. 297 * When considering hot and cold data separation to reduce cleaning overhead, 298 * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, 299 * respectively. 300 * In the current design, you should not change the numbers intentionally. 301 * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 302 * logs individually according to the underlying devices. (default: 6) 303 * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for 304 * data and 8 for node logs. 305 */ 306 #define NR_CURSEG_DATA_TYPE (3) 307 #define NR_CURSEG_NODE_TYPE (3) 308 #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) 309 310 enum { 311 CURSEG_HOT_DATA = 0, /* directory entry blocks */ 312 CURSEG_WARM_DATA, /* data blocks */ 313 CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ 314 CURSEG_HOT_NODE, /* direct node blocks of directory files */ 315 CURSEG_WARM_NODE, /* direct node blocks of normal files */ 316 CURSEG_COLD_NODE, /* indirect node blocks */ 317 NO_CHECK_TYPE 318 }; 319 320 struct flush_cmd { 321 struct flush_cmd *next; 322 struct completion wait; 323 int ret; 324 }; 325 326 struct f2fs_sm_info { 327 struct sit_info *sit_info; /* whole segment information */ 328 struct free_segmap_info *free_info; /* free segment information */ 329 struct dirty_seglist_info *dirty_info; /* dirty segment information */ 330 struct curseg_info *curseg_array; /* active segment information */ 331 332 struct list_head wblist_head; /* list of under-writeback pages */ 333 spinlock_t wblist_lock; /* lock for checkpoint */ 334 335 block_t seg0_blkaddr; /* block address of 0'th segment */ 336 block_t main_blkaddr; /* start block address of main area */ 337 block_t ssa_blkaddr; /* start block address of SSA area */ 338 339 unsigned int segment_count; /* total # of segments */ 340 unsigned int main_segments; /* # of segments in main area */ 341 unsigned int reserved_segments; /* # of reserved segments */ 342 unsigned int ovp_segments; /* # of overprovision segments */ 343 344 /* a threshold to reclaim prefree segments */ 345 unsigned int rec_prefree_segments; 346 347 /* for small discard management */ 348 struct list_head discard_list; /* 4KB discard list */ 349 int nr_discards; /* # of discards in the list */ 350 int max_discards; /* max. discards to be issued */ 351 352 unsigned int ipu_policy; /* in-place-update policy */ 353 unsigned int min_ipu_util; /* in-place-update threshold */ 354 355 /* for flush command control */ 356 struct task_struct *f2fs_issue_flush; /* flush thread */ 357 wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ 358 struct flush_cmd *issue_list; /* list for command issue */ 359 struct flush_cmd *dispatch_list; /* list for command dispatch */ 360 spinlock_t issue_lock; /* for issue list lock */ 361 struct flush_cmd *issue_tail; /* list tail of issue list */ 362 }; 363 364 /* 365 * For superblock 366 */ 367 /* 368 * COUNT_TYPE for monitoring 369 * 370 * f2fs monitors the number of several block types such as on-writeback, 371 * dirty dentry blocks, dirty node blocks, and dirty meta blocks. 372 */ 373 enum count_type { 374 F2FS_WRITEBACK, 375 F2FS_DIRTY_DENTS, 376 F2FS_DIRTY_NODES, 377 F2FS_DIRTY_META, 378 NR_COUNT_TYPE, 379 }; 380 381 /* 382 * The below are the page types of bios used in submti_bio(). 383 * The available types are: 384 * DATA User data pages. It operates as async mode. 385 * NODE Node pages. It operates as async mode. 386 * META FS metadata pages such as SIT, NAT, CP. 387 * NR_PAGE_TYPE The number of page types. 388 * META_FLUSH Make sure the previous pages are written 389 * with waiting the bio's completion 390 * ... Only can be used with META. 391 */ 392 #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) 393 enum page_type { 394 DATA, 395 NODE, 396 META, 397 NR_PAGE_TYPE, 398 META_FLUSH, 399 }; 400 401 struct f2fs_io_info { 402 enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ 403 int rw; /* contains R/RS/W/WS with REQ_META/REQ_PRIO */ 404 }; 405 406 #define is_read_io(rw) (((rw) & 1) == READ) 407 struct f2fs_bio_info { 408 struct f2fs_sb_info *sbi; /* f2fs superblock */ 409 struct bio *bio; /* bios to merge */ 410 sector_t last_block_in_bio; /* last block number */ 411 struct f2fs_io_info fio; /* store buffered io info. */ 412 struct rw_semaphore io_rwsem; /* blocking op for bio */ 413 }; 414 415 struct f2fs_sb_info { 416 struct super_block *sb; /* pointer to VFS super block */ 417 struct proc_dir_entry *s_proc; /* proc entry */ 418 struct buffer_head *raw_super_buf; /* buffer head of raw sb */ 419 struct f2fs_super_block *raw_super; /* raw super block pointer */ 420 int s_dirty; /* dirty flag for checkpoint */ 421 422 /* for node-related operations */ 423 struct f2fs_nm_info *nm_info; /* node manager */ 424 struct inode *node_inode; /* cache node blocks */ 425 426 /* for segment-related operations */ 427 struct f2fs_sm_info *sm_info; /* segment manager */ 428 429 /* for bio operations */ 430 struct f2fs_bio_info read_io; /* for read bios */ 431 struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ 432 struct completion *wait_io; /* for completion bios */ 433 434 /* for checkpoint */ 435 struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ 436 struct inode *meta_inode; /* cache meta blocks */ 437 struct mutex cp_mutex; /* checkpoint procedure lock */ 438 struct rw_semaphore cp_rwsem; /* blocking FS operations */ 439 struct mutex node_write; /* locking node writes */ 440 struct mutex writepages; /* mutex for writepages() */ 441 bool por_doing; /* recovery is doing or not */ 442 wait_queue_head_t cp_wait; 443 444 /* for orphan inode management */ 445 struct list_head orphan_inode_list; /* orphan inode list */ 446 spinlock_t orphan_inode_lock; /* for orphan inode list */ 447 unsigned int n_orphans; /* # of orphan inodes */ 448 unsigned int max_orphans; /* max orphan inodes */ 449 450 /* for directory inode management */ 451 struct list_head dir_inode_list; /* dir inode list */ 452 spinlock_t dir_inode_lock; /* for dir inode list lock */ 453 454 /* basic file system units */ 455 unsigned int log_sectors_per_block; /* log2 sectors per block */ 456 unsigned int log_blocksize; /* log2 block size */ 457 unsigned int blocksize; /* block size */ 458 unsigned int root_ino_num; /* root inode number*/ 459 unsigned int node_ino_num; /* node inode number*/ 460 unsigned int meta_ino_num; /* meta inode number*/ 461 unsigned int log_blocks_per_seg; /* log2 blocks per segment */ 462 unsigned int blocks_per_seg; /* blocks per segment */ 463 unsigned int segs_per_sec; /* segments per section */ 464 unsigned int secs_per_zone; /* sections per zone */ 465 unsigned int total_sections; /* total section count */ 466 unsigned int total_node_count; /* total node block count */ 467 unsigned int total_valid_node_count; /* valid node block count */ 468 unsigned int total_valid_inode_count; /* valid inode count */ 469 int active_logs; /* # of active logs */ 470 int dir_level; /* directory level */ 471 472 block_t user_block_count; /* # of user blocks */ 473 block_t total_valid_block_count; /* # of valid blocks */ 474 block_t alloc_valid_block_count; /* # of allocated blocks */ 475 block_t last_valid_block_count; /* for recovery */ 476 u32 s_next_generation; /* for NFS support */ 477 atomic_t nr_pages[NR_COUNT_TYPE]; /* # of pages, see count_type */ 478 479 struct f2fs_mount_info mount_opt; /* mount options */ 480 481 /* for cleaning operations */ 482 struct mutex gc_mutex; /* mutex for GC */ 483 struct f2fs_gc_kthread *gc_thread; /* GC thread */ 484 unsigned int cur_victim_sec; /* current victim section num */ 485 486 /* maximum # of trials to find a victim segment for SSR and GC */ 487 unsigned int max_victim_search; 488 489 /* 490 * for stat information. 491 * one is for the LFS mode, and the other is for the SSR mode. 492 */ 493 #ifdef CONFIG_F2FS_STAT_FS 494 struct f2fs_stat_info *stat_info; /* FS status information */ 495 unsigned int segment_count[2]; /* # of allocated segments */ 496 unsigned int block_count[2]; /* # of allocated blocks */ 497 int total_hit_ext, read_hit_ext; /* extent cache hit ratio */ 498 int inline_inode; /* # of inline_data inodes */ 499 int bg_gc; /* background gc calls */ 500 unsigned int n_dirty_dirs; /* # of dir inodes */ 501 #endif 502 unsigned int last_victim[2]; /* last victim segment # */ 503 spinlock_t stat_lock; /* lock for stat operations */ 504 505 /* For sysfs suppport */ 506 struct kobject s_kobj; 507 struct completion s_kobj_unregister; 508 }; 509 510 /* 511 * Inline functions 512 */ 513 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) 514 { 515 return container_of(inode, struct f2fs_inode_info, vfs_inode); 516 } 517 518 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) 519 { 520 return sb->s_fs_info; 521 } 522 523 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) 524 { 525 return (struct f2fs_super_block *)(sbi->raw_super); 526 } 527 528 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) 529 { 530 return (struct f2fs_checkpoint *)(sbi->ckpt); 531 } 532 533 static inline struct f2fs_node *F2FS_NODE(struct page *page) 534 { 535 return (struct f2fs_node *)page_address(page); 536 } 537 538 static inline struct f2fs_inode *F2FS_INODE(struct page *page) 539 { 540 return &((struct f2fs_node *)page_address(page))->i; 541 } 542 543 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) 544 { 545 return (struct f2fs_nm_info *)(sbi->nm_info); 546 } 547 548 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) 549 { 550 return (struct f2fs_sm_info *)(sbi->sm_info); 551 } 552 553 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) 554 { 555 return (struct sit_info *)(SM_I(sbi)->sit_info); 556 } 557 558 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) 559 { 560 return (struct free_segmap_info *)(SM_I(sbi)->free_info); 561 } 562 563 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) 564 { 565 return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); 566 } 567 568 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) 569 { 570 return sbi->meta_inode->i_mapping; 571 } 572 573 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) 574 { 575 return sbi->node_inode->i_mapping; 576 } 577 578 static inline void F2FS_SET_SB_DIRT(struct f2fs_sb_info *sbi) 579 { 580 sbi->s_dirty = 1; 581 } 582 583 static inline void F2FS_RESET_SB_DIRT(struct f2fs_sb_info *sbi) 584 { 585 sbi->s_dirty = 0; 586 } 587 588 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) 589 { 590 return le64_to_cpu(cp->checkpoint_ver); 591 } 592 593 static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 594 { 595 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 596 return ckpt_flags & f; 597 } 598 599 static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 600 { 601 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 602 ckpt_flags |= f; 603 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 604 } 605 606 static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) 607 { 608 unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); 609 ckpt_flags &= (~f); 610 cp->ckpt_flags = cpu_to_le32(ckpt_flags); 611 } 612 613 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) 614 { 615 down_read(&sbi->cp_rwsem); 616 } 617 618 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) 619 { 620 up_read(&sbi->cp_rwsem); 621 } 622 623 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) 624 { 625 f2fs_down_write(&sbi->cp_rwsem, &sbi->cp_mutex); 626 } 627 628 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) 629 { 630 up_write(&sbi->cp_rwsem); 631 } 632 633 /* 634 * Check whether the given nid is within node id range. 635 */ 636 static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) 637 { 638 WARN_ON((nid >= NM_I(sbi)->max_nid)); 639 if (unlikely(nid >= NM_I(sbi)->max_nid)) 640 return -EINVAL; 641 return 0; 642 } 643 644 #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 645 646 /* 647 * Check whether the inode has blocks or not 648 */ 649 static inline int F2FS_HAS_BLOCKS(struct inode *inode) 650 { 651 if (F2FS_I(inode)->i_xattr_nid) 652 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; 653 else 654 return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; 655 } 656 657 static inline bool f2fs_has_xattr_block(unsigned int ofs) 658 { 659 return ofs == XATTR_NODE_OFFSET; 660 } 661 662 static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, 663 struct inode *inode, blkcnt_t count) 664 { 665 block_t valid_block_count; 666 667 spin_lock(&sbi->stat_lock); 668 valid_block_count = 669 sbi->total_valid_block_count + (block_t)count; 670 if (unlikely(valid_block_count > sbi->user_block_count)) { 671 spin_unlock(&sbi->stat_lock); 672 return false; 673 } 674 inode->i_blocks += count; 675 sbi->total_valid_block_count = valid_block_count; 676 sbi->alloc_valid_block_count += (block_t)count; 677 spin_unlock(&sbi->stat_lock); 678 return true; 679 } 680 681 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, 682 struct inode *inode, 683 blkcnt_t count) 684 { 685 spin_lock(&sbi->stat_lock); 686 f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); 687 f2fs_bug_on(inode->i_blocks < count); 688 inode->i_blocks -= count; 689 sbi->total_valid_block_count -= (block_t)count; 690 spin_unlock(&sbi->stat_lock); 691 } 692 693 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) 694 { 695 atomic_inc(&sbi->nr_pages[count_type]); 696 F2FS_SET_SB_DIRT(sbi); 697 } 698 699 static inline void inode_inc_dirty_dents(struct inode *inode) 700 { 701 inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); 702 atomic_inc(&F2FS_I(inode)->dirty_dents); 703 } 704 705 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) 706 { 707 atomic_dec(&sbi->nr_pages[count_type]); 708 } 709 710 static inline void inode_dec_dirty_dents(struct inode *inode) 711 { 712 if (!S_ISDIR(inode->i_mode)) 713 return; 714 715 dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); 716 atomic_dec(&F2FS_I(inode)->dirty_dents); 717 } 718 719 static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) 720 { 721 return atomic_read(&sbi->nr_pages[count_type]); 722 } 723 724 static inline int get_dirty_dents(struct inode *inode) 725 { 726 return atomic_read(&F2FS_I(inode)->dirty_dents); 727 } 728 729 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) 730 { 731 unsigned int pages_per_sec = sbi->segs_per_sec * 732 (1 << sbi->log_blocks_per_seg); 733 return ((get_pages(sbi, block_type) + pages_per_sec - 1) 734 >> sbi->log_blocks_per_seg) / sbi->segs_per_sec; 735 } 736 737 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) 738 { 739 return sbi->total_valid_block_count; 740 } 741 742 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) 743 { 744 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 745 746 /* return NAT or SIT bitmap */ 747 if (flag == NAT_BITMAP) 748 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); 749 else if (flag == SIT_BITMAP) 750 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); 751 752 return 0; 753 } 754 755 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) 756 { 757 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 758 int offset = (flag == NAT_BITMAP) ? 759 le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; 760 return &ckpt->sit_nat_version_bitmap + offset; 761 } 762 763 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) 764 { 765 block_t start_addr; 766 struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); 767 unsigned long long ckpt_version = cur_cp_version(ckpt); 768 769 start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); 770 771 /* 772 * odd numbered checkpoint should at cp segment 0 773 * and even segent must be at cp segment 1 774 */ 775 if (!(ckpt_version & 1)) 776 start_addr += sbi->blocks_per_seg; 777 778 return start_addr; 779 } 780 781 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) 782 { 783 return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); 784 } 785 786 static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, 787 struct inode *inode) 788 { 789 block_t valid_block_count; 790 unsigned int valid_node_count; 791 792 spin_lock(&sbi->stat_lock); 793 794 valid_block_count = sbi->total_valid_block_count + 1; 795 if (unlikely(valid_block_count > sbi->user_block_count)) { 796 spin_unlock(&sbi->stat_lock); 797 return false; 798 } 799 800 valid_node_count = sbi->total_valid_node_count + 1; 801 if (unlikely(valid_node_count > sbi->total_node_count)) { 802 spin_unlock(&sbi->stat_lock); 803 return false; 804 } 805 806 if (inode) 807 inode->i_blocks++; 808 809 sbi->alloc_valid_block_count++; 810 sbi->total_valid_node_count++; 811 sbi->total_valid_block_count++; 812 spin_unlock(&sbi->stat_lock); 813 814 return true; 815 } 816 817 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, 818 struct inode *inode) 819 { 820 spin_lock(&sbi->stat_lock); 821 822 f2fs_bug_on(!sbi->total_valid_block_count); 823 f2fs_bug_on(!sbi->total_valid_node_count); 824 f2fs_bug_on(!inode->i_blocks); 825 826 inode->i_blocks--; 827 sbi->total_valid_node_count--; 828 sbi->total_valid_block_count--; 829 830 spin_unlock(&sbi->stat_lock); 831 } 832 833 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) 834 { 835 return sbi->total_valid_node_count; 836 } 837 838 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) 839 { 840 spin_lock(&sbi->stat_lock); 841 f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); 842 sbi->total_valid_inode_count++; 843 spin_unlock(&sbi->stat_lock); 844 } 845 846 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) 847 { 848 spin_lock(&sbi->stat_lock); 849 f2fs_bug_on(!sbi->total_valid_inode_count); 850 sbi->total_valid_inode_count--; 851 spin_unlock(&sbi->stat_lock); 852 } 853 854 static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) 855 { 856 return sbi->total_valid_inode_count; 857 } 858 859 static inline void f2fs_put_page(struct page *page, int unlock) 860 { 861 if (!page) 862 return; 863 864 if (unlock) { 865 f2fs_bug_on(!PageLocked(page)); 866 unlock_page(page); 867 } 868 page_cache_release(page); 869 } 870 871 static inline void f2fs_put_dnode(struct dnode_of_data *dn) 872 { 873 if (dn->node_page) 874 f2fs_put_page(dn->node_page, 1); 875 if (dn->inode_page && dn->node_page != dn->inode_page) 876 f2fs_put_page(dn->inode_page, 0); 877 dn->node_page = NULL; 878 dn->inode_page = NULL; 879 } 880 881 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, 882 size_t size) 883 { 884 return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); 885 } 886 887 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, 888 gfp_t flags) 889 { 890 void *entry; 891 retry: 892 entry = kmem_cache_alloc(cachep, flags); 893 if (!entry) { 894 cond_resched(); 895 goto retry; 896 } 897 898 return entry; 899 } 900 901 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) 902 903 static inline bool IS_INODE(struct page *page) 904 { 905 struct f2fs_node *p = F2FS_NODE(page); 906 return RAW_IS_INODE(p); 907 } 908 909 static inline __le32 *blkaddr_in_node(struct f2fs_node *node) 910 { 911 return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; 912 } 913 914 static inline block_t datablock_addr(struct page *node_page, 915 unsigned int offset) 916 { 917 struct f2fs_node *raw_node; 918 __le32 *addr_array; 919 raw_node = F2FS_NODE(node_page); 920 addr_array = blkaddr_in_node(raw_node); 921 return le32_to_cpu(addr_array[offset]); 922 } 923 924 static inline int f2fs_test_bit(unsigned int nr, char *addr) 925 { 926 int mask; 927 928 addr += (nr >> 3); 929 mask = 1 << (7 - (nr & 0x07)); 930 return mask & *addr; 931 } 932 933 static inline int f2fs_set_bit(unsigned int nr, char *addr) 934 { 935 int mask; 936 int ret; 937 938 addr += (nr >> 3); 939 mask = 1 << (7 - (nr & 0x07)); 940 ret = mask & *addr; 941 *addr |= mask; 942 return ret; 943 } 944 945 static inline int f2fs_clear_bit(unsigned int nr, char *addr) 946 { 947 int mask; 948 int ret; 949 950 addr += (nr >> 3); 951 mask = 1 << (7 - (nr & 0x07)); 952 ret = mask & *addr; 953 *addr &= ~mask; 954 return ret; 955 } 956 957 /* used for f2fs_inode_info->flags */ 958 enum { 959 FI_NEW_INODE, /* indicate newly allocated inode */ 960 FI_DIRTY_INODE, /* indicate inode is dirty or not */ 961 FI_INC_LINK, /* need to increment i_nlink */ 962 FI_ACL_MODE, /* indicate acl mode */ 963 FI_NO_ALLOC, /* should not allocate any blocks */ 964 FI_UPDATE_DIR, /* should update inode block for consistency */ 965 FI_DELAY_IPUT, /* used for the recovery */ 966 FI_NO_EXTENT, /* not to use the extent cache */ 967 FI_INLINE_XATTR, /* used for inline xattr */ 968 FI_INLINE_DATA, /* used for inline data*/ 969 }; 970 971 static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) 972 { 973 set_bit(flag, &fi->flags); 974 } 975 976 static inline int is_inode_flag_set(struct f2fs_inode_info *fi, int flag) 977 { 978 return test_bit(flag, &fi->flags); 979 } 980 981 static inline void clear_inode_flag(struct f2fs_inode_info *fi, int flag) 982 { 983 clear_bit(flag, &fi->flags); 984 } 985 986 static inline void set_acl_inode(struct f2fs_inode_info *fi, umode_t mode) 987 { 988 fi->i_acl_mode = mode; 989 set_inode_flag(fi, FI_ACL_MODE); 990 } 991 992 static inline int cond_clear_inode_flag(struct f2fs_inode_info *fi, int flag) 993 { 994 if (is_inode_flag_set(fi, FI_ACL_MODE)) { 995 clear_inode_flag(fi, FI_ACL_MODE); 996 return 1; 997 } 998 return 0; 999 } 1000 1001 static inline void get_inline_info(struct f2fs_inode_info *fi, 1002 struct f2fs_inode *ri) 1003 { 1004 if (ri->i_inline & F2FS_INLINE_XATTR) 1005 set_inode_flag(fi, FI_INLINE_XATTR); 1006 if (ri->i_inline & F2FS_INLINE_DATA) 1007 set_inode_flag(fi, FI_INLINE_DATA); 1008 } 1009 1010 static inline void set_raw_inline(struct f2fs_inode_info *fi, 1011 struct f2fs_inode *ri) 1012 { 1013 ri->i_inline = 0; 1014 1015 if (is_inode_flag_set(fi, FI_INLINE_XATTR)) 1016 ri->i_inline |= F2FS_INLINE_XATTR; 1017 if (is_inode_flag_set(fi, FI_INLINE_DATA)) 1018 ri->i_inline |= F2FS_INLINE_DATA; 1019 } 1020 1021 static inline int f2fs_has_inline_xattr(struct inode *inode) 1022 { 1023 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_XATTR); 1024 } 1025 1026 static inline unsigned int addrs_per_inode(struct f2fs_inode_info *fi) 1027 { 1028 if (f2fs_has_inline_xattr(&fi->vfs_inode)) 1029 return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; 1030 return DEF_ADDRS_PER_INODE; 1031 } 1032 1033 static inline void *inline_xattr_addr(struct page *page) 1034 { 1035 struct f2fs_inode *ri = F2FS_INODE(page); 1036 return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - 1037 F2FS_INLINE_XATTR_ADDRS]); 1038 } 1039 1040 static inline int inline_xattr_size(struct inode *inode) 1041 { 1042 if (f2fs_has_inline_xattr(inode)) 1043 return F2FS_INLINE_XATTR_ADDRS << 2; 1044 else 1045 return 0; 1046 } 1047 1048 static inline int f2fs_has_inline_data(struct inode *inode) 1049 { 1050 return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); 1051 } 1052 1053 static inline void *inline_data_addr(struct page *page) 1054 { 1055 struct f2fs_inode *ri = F2FS_INODE(page); 1056 return (void *)&(ri->i_addr[1]); 1057 } 1058 1059 static inline int f2fs_readonly(struct super_block *sb) 1060 { 1061 return sb->s_flags & MS_RDONLY; 1062 } 1063 1064 static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) 1065 { 1066 set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); 1067 sbi->sb->s_flags |= MS_RDONLY; 1068 } 1069 1070 #define get_inode_mode(i) \ 1071 ((is_inode_flag_set(F2FS_I(i), FI_ACL_MODE)) ? \ 1072 (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) 1073 1074 /* 1075 * file.c 1076 */ 1077 int f2fs_sync_file(struct file *, loff_t, loff_t, int); 1078 void truncate_data_blocks(struct dnode_of_data *); 1079 int truncate_blocks(struct inode *, u64); 1080 void f2fs_truncate(struct inode *); 1081 int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); 1082 int f2fs_setattr(struct dentry *, struct iattr *); 1083 int truncate_hole(struct inode *, pgoff_t, pgoff_t); 1084 int truncate_data_blocks_range(struct dnode_of_data *, int); 1085 long f2fs_ioctl(struct file *, unsigned int, unsigned long); 1086 long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); 1087 1088 /* 1089 * inode.c 1090 */ 1091 void f2fs_set_inode_flags(struct inode *); 1092 struct inode *f2fs_iget(struct super_block *, unsigned long); 1093 int try_to_free_nats(struct f2fs_sb_info *, int); 1094 void update_inode(struct inode *, struct page *); 1095 void update_inode_page(struct inode *); 1096 int f2fs_write_inode(struct inode *, struct writeback_control *); 1097 void f2fs_evict_inode(struct inode *); 1098 1099 /* 1100 * namei.c 1101 */ 1102 struct dentry *f2fs_get_parent(struct dentry *child); 1103 1104 /* 1105 * dir.c 1106 */ 1107 struct f2fs_dir_entry *f2fs_find_entry(struct inode *, struct qstr *, 1108 struct page **); 1109 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); 1110 ino_t f2fs_inode_by_name(struct inode *, struct qstr *); 1111 void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, 1112 struct page *, struct inode *); 1113 int update_dent_inode(struct inode *, const struct qstr *); 1114 int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *); 1115 void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *); 1116 int f2fs_make_empty(struct inode *, struct inode *); 1117 bool f2fs_empty_dir(struct inode *); 1118 1119 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) 1120 { 1121 return __f2fs_add_link(dentry->d_parent->d_inode, &dentry->d_name, 1122 inode); 1123 } 1124 1125 /* 1126 * super.c 1127 */ 1128 int f2fs_sync_fs(struct super_block *, int); 1129 extern __printf(3, 4) 1130 void f2fs_msg(struct super_block *, const char *, const char *, ...); 1131 1132 /* 1133 * hash.c 1134 */ 1135 f2fs_hash_t f2fs_dentry_hash(const char *, size_t); 1136 1137 /* 1138 * node.c 1139 */ 1140 struct dnode_of_data; 1141 struct node_info; 1142 1143 int is_checkpointed_node(struct f2fs_sb_info *, nid_t); 1144 bool fsync_mark_done(struct f2fs_sb_info *, nid_t); 1145 void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); 1146 int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); 1147 int truncate_inode_blocks(struct inode *, pgoff_t); 1148 int truncate_xattr_node(struct inode *, struct page *); 1149 int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); 1150 void remove_inode_page(struct inode *); 1151 struct page *new_inode_page(struct inode *, const struct qstr *); 1152 struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); 1153 void ra_node_page(struct f2fs_sb_info *, nid_t); 1154 struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); 1155 struct page *get_node_page_ra(struct page *, int); 1156 void sync_inode_page(struct dnode_of_data *); 1157 int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); 1158 bool alloc_nid(struct f2fs_sb_info *, nid_t *); 1159 void alloc_nid_done(struct f2fs_sb_info *, nid_t); 1160 void alloc_nid_failed(struct f2fs_sb_info *, nid_t); 1161 void recover_node_page(struct f2fs_sb_info *, struct page *, 1162 struct f2fs_summary *, struct node_info *, block_t); 1163 bool recover_xattr_data(struct inode *, struct page *, block_t); 1164 int recover_inode_page(struct f2fs_sb_info *, struct page *); 1165 int restore_node_summary(struct f2fs_sb_info *, unsigned int, 1166 struct f2fs_summary_block *); 1167 void flush_nat_entries(struct f2fs_sb_info *); 1168 int build_node_manager(struct f2fs_sb_info *); 1169 void destroy_node_manager(struct f2fs_sb_info *); 1170 int __init create_node_manager_caches(void); 1171 void destroy_node_manager_caches(void); 1172 1173 /* 1174 * segment.c 1175 */ 1176 void f2fs_balance_fs(struct f2fs_sb_info *); 1177 void f2fs_balance_fs_bg(struct f2fs_sb_info *); 1178 int f2fs_issue_flush(struct f2fs_sb_info *); 1179 void invalidate_blocks(struct f2fs_sb_info *, block_t); 1180 void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); 1181 void clear_prefree_segments(struct f2fs_sb_info *); 1182 int npages_for_summary_flush(struct f2fs_sb_info *); 1183 void allocate_new_segments(struct f2fs_sb_info *); 1184 struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); 1185 void write_meta_page(struct f2fs_sb_info *, struct page *); 1186 void write_node_page(struct f2fs_sb_info *, struct page *, 1187 struct f2fs_io_info *, unsigned int, block_t, block_t *); 1188 void write_data_page(struct page *, struct dnode_of_data *, block_t *, 1189 struct f2fs_io_info *); 1190 void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); 1191 void recover_data_page(struct f2fs_sb_info *, struct page *, 1192 struct f2fs_summary *, block_t, block_t); 1193 void rewrite_node_page(struct f2fs_sb_info *, struct page *, 1194 struct f2fs_summary *, block_t, block_t); 1195 void allocate_data_block(struct f2fs_sb_info *, struct page *, 1196 block_t, block_t *, struct f2fs_summary *, int); 1197 void f2fs_wait_on_page_writeback(struct page *, enum page_type); 1198 void write_data_summaries(struct f2fs_sb_info *, block_t); 1199 void write_node_summaries(struct f2fs_sb_info *, block_t); 1200 int lookup_journal_in_cursum(struct f2fs_summary_block *, 1201 int, unsigned int, int); 1202 void flush_sit_entries(struct f2fs_sb_info *); 1203 int build_segment_manager(struct f2fs_sb_info *); 1204 void destroy_segment_manager(struct f2fs_sb_info *); 1205 int __init create_segment_manager_caches(void); 1206 void destroy_segment_manager_caches(void); 1207 1208 /* 1209 * checkpoint.c 1210 */ 1211 struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); 1212 struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); 1213 int ra_meta_pages(struct f2fs_sb_info *, int, int, int); 1214 long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); 1215 int acquire_orphan_inode(struct f2fs_sb_info *); 1216 void release_orphan_inode(struct f2fs_sb_info *); 1217 void add_orphan_inode(struct f2fs_sb_info *, nid_t); 1218 void remove_orphan_inode(struct f2fs_sb_info *, nid_t); 1219 void recover_orphan_inodes(struct f2fs_sb_info *); 1220 int get_valid_checkpoint(struct f2fs_sb_info *); 1221 void set_dirty_dir_page(struct inode *, struct page *); 1222 void add_dirty_dir_inode(struct inode *); 1223 void remove_dirty_dir_inode(struct inode *); 1224 struct inode *check_dirty_dir_inode(struct f2fs_sb_info *, nid_t); 1225 void sync_dirty_dir_inodes(struct f2fs_sb_info *); 1226 void write_checkpoint(struct f2fs_sb_info *, bool); 1227 void init_orphan_info(struct f2fs_sb_info *); 1228 int __init create_checkpoint_caches(void); 1229 void destroy_checkpoint_caches(void); 1230 1231 /* 1232 * data.c 1233 */ 1234 void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); 1235 int f2fs_submit_page_bio(struct f2fs_sb_info *, struct page *, block_t, int); 1236 void f2fs_submit_page_mbio(struct f2fs_sb_info *, struct page *, block_t, 1237 struct f2fs_io_info *); 1238 int reserve_new_block(struct dnode_of_data *); 1239 int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); 1240 void update_extent_cache(block_t, struct dnode_of_data *); 1241 struct page *find_data_page(struct inode *, pgoff_t, bool); 1242 struct page *get_lock_data_page(struct inode *, pgoff_t); 1243 struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); 1244 int do_write_data_page(struct page *, struct f2fs_io_info *); 1245 1246 /* 1247 * gc.c 1248 */ 1249 int start_gc_thread(struct f2fs_sb_info *); 1250 void stop_gc_thread(struct f2fs_sb_info *); 1251 block_t start_bidx_of_node(unsigned int, struct f2fs_inode_info *); 1252 int f2fs_gc(struct f2fs_sb_info *); 1253 void build_gc_manager(struct f2fs_sb_info *); 1254 int __init create_gc_caches(void); 1255 void destroy_gc_caches(void); 1256 1257 /* 1258 * recovery.c 1259 */ 1260 int recover_fsync_data(struct f2fs_sb_info *); 1261 bool space_for_roll_forward(struct f2fs_sb_info *); 1262 1263 /* 1264 * debug.c 1265 */ 1266 #ifdef CONFIG_F2FS_STAT_FS 1267 struct f2fs_stat_info { 1268 struct list_head stat_list; 1269 struct f2fs_sb_info *sbi; 1270 struct mutex stat_lock; 1271 int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; 1272 int main_area_segs, main_area_sections, main_area_zones; 1273 int hit_ext, total_ext; 1274 int ndirty_node, ndirty_dent, ndirty_dirs, ndirty_meta; 1275 int nats, sits, fnids; 1276 int total_count, utilization; 1277 int bg_gc, inline_inode; 1278 unsigned int valid_count, valid_node_count, valid_inode_count; 1279 unsigned int bimodal, avg_vblocks; 1280 int util_free, util_valid, util_invalid; 1281 int rsvd_segs, overp_segs; 1282 int dirty_count, node_pages, meta_pages; 1283 int prefree_count, call_count, cp_count; 1284 int tot_segs, node_segs, data_segs, free_segs, free_secs; 1285 int tot_blks, data_blks, node_blks; 1286 int curseg[NR_CURSEG_TYPE]; 1287 int cursec[NR_CURSEG_TYPE]; 1288 int curzone[NR_CURSEG_TYPE]; 1289 1290 unsigned int segment_count[2]; 1291 unsigned int block_count[2]; 1292 unsigned base_mem, cache_mem; 1293 }; 1294 1295 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) 1296 { 1297 return (struct f2fs_stat_info *)sbi->stat_info; 1298 } 1299 1300 #define stat_inc_cp_count(si) ((si)->cp_count++) 1301 #define stat_inc_call_count(si) ((si)->call_count++) 1302 #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) 1303 #define stat_inc_dirty_dir(sbi) ((sbi)->n_dirty_dirs++) 1304 #define stat_dec_dirty_dir(sbi) ((sbi)->n_dirty_dirs--) 1305 #define stat_inc_total_hit(sb) ((F2FS_SB(sb))->total_hit_ext++) 1306 #define stat_inc_read_hit(sb) ((F2FS_SB(sb))->read_hit_ext++) 1307 #define stat_inc_inline_inode(inode) \ 1308 do { \ 1309 if (f2fs_has_inline_data(inode)) \ 1310 ((F2FS_SB(inode->i_sb))->inline_inode++); \ 1311 } while (0) 1312 #define stat_dec_inline_inode(inode) \ 1313 do { \ 1314 if (f2fs_has_inline_data(inode)) \ 1315 ((F2FS_SB(inode->i_sb))->inline_inode--); \ 1316 } while (0) 1317 1318 #define stat_inc_seg_type(sbi, curseg) \ 1319 ((sbi)->segment_count[(curseg)->alloc_type]++) 1320 #define stat_inc_block_count(sbi, curseg) \ 1321 ((sbi)->block_count[(curseg)->alloc_type]++) 1322 1323 #define stat_inc_seg_count(sbi, type) \ 1324 do { \ 1325 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1326 (si)->tot_segs++; \ 1327 if (type == SUM_TYPE_DATA) \ 1328 si->data_segs++; \ 1329 else \ 1330 si->node_segs++; \ 1331 } while (0) 1332 1333 #define stat_inc_tot_blk_count(si, blks) \ 1334 (si->tot_blks += (blks)) 1335 1336 #define stat_inc_data_blk_count(sbi, blks) \ 1337 do { \ 1338 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1339 stat_inc_tot_blk_count(si, blks); \ 1340 si->data_blks += (blks); \ 1341 } while (0) 1342 1343 #define stat_inc_node_blk_count(sbi, blks) \ 1344 do { \ 1345 struct f2fs_stat_info *si = F2FS_STAT(sbi); \ 1346 stat_inc_tot_blk_count(si, blks); \ 1347 si->node_blks += (blks); \ 1348 } while (0) 1349 1350 int f2fs_build_stats(struct f2fs_sb_info *); 1351 void f2fs_destroy_stats(struct f2fs_sb_info *); 1352 void __init f2fs_create_root_stats(void); 1353 void f2fs_destroy_root_stats(void); 1354 #else 1355 #define stat_inc_cp_count(si) 1356 #define stat_inc_call_count(si) 1357 #define stat_inc_bggc_count(si) 1358 #define stat_inc_dirty_dir(sbi) 1359 #define stat_dec_dirty_dir(sbi) 1360 #define stat_inc_total_hit(sb) 1361 #define stat_inc_read_hit(sb) 1362 #define stat_inc_inline_inode(inode) 1363 #define stat_dec_inline_inode(inode) 1364 #define stat_inc_seg_type(sbi, curseg) 1365 #define stat_inc_block_count(sbi, curseg) 1366 #define stat_inc_seg_count(si, type) 1367 #define stat_inc_tot_blk_count(si, blks) 1368 #define stat_inc_data_blk_count(si, blks) 1369 #define stat_inc_node_blk_count(sbi, blks) 1370 1371 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } 1372 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } 1373 static inline void __init f2fs_create_root_stats(void) { } 1374 static inline void f2fs_destroy_root_stats(void) { } 1375 #endif 1376 1377 extern const struct file_operations f2fs_dir_operations; 1378 extern const struct file_operations f2fs_file_operations; 1379 extern const struct inode_operations f2fs_file_inode_operations; 1380 extern const struct address_space_operations f2fs_dblock_aops; 1381 extern const struct address_space_operations f2fs_node_aops; 1382 extern const struct address_space_operations f2fs_meta_aops; 1383 extern const struct inode_operations f2fs_dir_inode_operations; 1384 extern const struct inode_operations f2fs_symlink_inode_operations; 1385 extern const struct inode_operations f2fs_special_inode_operations; 1386 1387 /* 1388 * inline.c 1389 */ 1390 bool f2fs_may_inline(struct inode *); 1391 int f2fs_read_inline_data(struct inode *, struct page *); 1392 int f2fs_convert_inline_data(struct inode *, pgoff_t); 1393 int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); 1394 int recover_inline_data(struct inode *, struct page *); 1395 #endif 1396